linux/drivers/media
Linus Torvalds 96d4f267e4 Remove 'type' argument from access_ok() function
Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
of the user address range verification function since we got rid of the
old racy i386-only code to walk page tables by hand.

It existed because the original 80386 would not honor the write protect
bit when in kernel mode, so you had to do COW by hand before doing any
user access.  But we haven't supported that in a long time, and these
days the 'type' argument is a purely historical artifact.

A discussion about extending 'user_access_begin()' to do the range
checking resulted this patch, because there is no way we're going to
move the old VERIFY_xyz interface to that model.  And it's best done at
the end of the merge window when I've done most of my merges, so let's
just get this done once and for all.

This patch was mostly done with a sed-script, with manual fix-ups for
the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.

There were a couple of notable cases:

 - csky still had the old "verify_area()" name as an alias.

 - the iter_iov code had magical hardcoded knowledge of the actual
   values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
   really used it)

 - microblaze used the type argument for a debug printout

but other than those oddities this should be a total no-op patch.

I tried to fix up all architectures, did fairly extensive grepping for
access_ok() uses, and the changes are trivial, but I may have missed
something.  Any missed conversion should be trivially fixable, though.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-03 18:57:57 -08:00
..
cec media: cec: keep track of outstanding transmits 2018-11-23 05:56:14 -05:00
common media fixes for v4.20-rc8 2018-12-25 13:11:30 -08:00
dvb-core media: dvb_frontend: add debug message for frequency intervals 2018-11-23 11:59:45 -05:00
dvb-frontends media: drxk_hard: check if parameter is not NULL 2018-12-17 14:43:10 -05:00
firewire media: firewire: Fix app_info parameter type in avc_ca{,_app}_info 2018-12-05 05:34:33 -05:00
i2c media fixes for v4.20-rc8 2018-12-25 13:00:14 -08:00
mmc media: siano: use GFP_DMA only for smssdio 2018-05-15 08:04:42 -04:00
pci Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
platform mm: convert totalram_pages and totalhigh_pages variables to atomic 2018-12-28 12:11:47 -08:00
radio media: replace strcpy() by strscpy() 2018-09-11 13:32:17 -04:00
rc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-12-27 13:04:52 -08:00
spi media: cxd2880-spi: Add optional vcc regulator 2018-12-03 13:33:16 -05:00
tuners media: si2157: declare its own pads 2018-09-17 13:16:19 -04:00
usb media: siano: Use kmemdup instead of duplicating its function 2018-12-07 09:42:18 -05:00
v4l2-core Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
Kconfig media: Add a Kconfig option for the Request API 2018-12-05 13:07:43 -05:00
Makefile media: media-request: implement media requests 2018-08-31 11:04:51 -04:00
media-device.c media: Add a Kconfig option for the Request API 2018-12-05 13:07:43 -05:00
media-devnode.c MAINTAINERS & files: Canonize the e-mails I use at files 2018-05-04 06:21:06 -04:00
media-entity.c media: v4l2-mc: switch it to use the new approach to setup pipelines 2018-09-17 13:16:19 -04:00
media-request.c media: media-request: Add compat ioctl 2018-11-20 12:53:27 -05:00